What is the current requirement for the fit to fly certificate for entering Thailand?

As of now, travelers still need the fit to fly certificate, but it has been proposed to be removed starting April 1st. Most official information can be found on Thai embassy websites, although some users have reported that the fit to fly certificate is no longer required as of March 31, 2021, along with other requirements such as a Certificate of Entry (COE), ASQ (Alternative State Quarantine), travel insurance, flight ticket, and a negative PCR test taken 72 hours before flying.